The 2 extra games are "The Power Battles" and "The Power Fighters." These are unique arcade titles never before available in the US. Taking a cue from Capcom's hugely popular Street Fighter series, the game drops Mega Man, Bass, and Proto Man into 1-on-1 conflicts with just the bosses. These are a fun ride, but they are probably the weakest games on the disc.

The most important aspect of any emulated game disc is how close these games play to the originals. In this case, almost flawlessly. There are a few odd glitches, but these are usually minor graphic hiccups and nothing that will not hinder gameplay. The controls are occasionally spotty (probably due to the pressure sensitive buttons), but a small adjustment period and you'll be on your way. All the little tricks are still intact as well. You can still make the chickens appear in Mega Man 2 and the select trick still does extra damage in Mega Man 1.

A save system now replaces the passwords of old, but you can still use the passwords if you want to. All the old ones you remember will still work as well. Adding to the value of the game is the navi mode. This requires players to beat all the games in order. Once you have started the first game in this mode, you cannot play any of the other games in the series until it is beaten. As a bonus, you will have help to guide you through the stages (though the text clues are very poorly translated). Also while playing in this mode, die-hard fans will be pleased to hear re-mixed music for almost every game. Oddly, the first two games have the new music, but only certain stages.

Beating specific bosses in the games will reveal loads of extras from a full episode of the original cartoon series (which is also available on DVD), new music, picture sets, and of course the two extra arcade games mention above. For those interested, the Gamecube version contains an interview with the series creator that is not on the PS2 version but not the cartoon. The Gamecube did not get the remixed music either.